diff --git a/README.md b/README.md
index bede6dd..c71091c 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,7 @@ Needs to contains 3 environment variable definitions
 + RECORD="host" : Replace host with the sub domain you want to update when WAN IP changes
 + APIKEY="Your-API-Key" : Replace with you API key generated on the Gandi web interface.
 
+Check this page if you don't know your APIKey : https://docs.gandi.net/en/domain_names/advanced_users/api.html
 
 ### /usr/local/bin/live-dns-update.sh
 This the script that is called by the cron job.